2666650556 has 24 divisors (see below), whose sum is σ = 4735610880. Its totient is φ = 1313755200.

The previous prime is 2666650517. The next prime is 2666650559. The reversal of 2666650556 is 6550566662.

It is a super-2 number, since 2×2666650556² = 14222050375630218272, which contains 22 as substring.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 2666650556.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2666650559) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62021 + ... + 95811.

It is an arithmetic number, because the mean of its divisors is an integer number (197317120).

Almost surely, 2^2666650556 is an apocalyptic number.

It is an amenable number.

2666650556 is a deficient number, since it is larger than the sum of its proper divisors (2068960324).

2666650556 is a wasteful number, since it uses less digits than its factorization.

2666650556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34085 (or 34083 counting only the distinct ones).

The product of its (nonzero) digits is 1944000, while the sum is 47.

The square root of 2666650556 is about 51639.6219583374. The cubic root of 2666650556 is about 1386.7197560676.

The spelling of 2666650556 in words is "two billion, six hundred sixty-six million, six hundred fifty thousand, five hundred fifty-six".